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Question

Fill in the blanks to make each of the following a true statement:
(i) AA=... (ii) ϕA=... (iii) AA=... (iv) UA=...

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Solution

(i) It can be clearly seen from the Venn diagram that
AA=U
(ii) ϕA=UA=A
ϕA=A
(iii) It can be clearly seen from the Venn diagram , there is no common portion between A and A' .
Hence, AA=ϕ
(iv) UA=ϕA=ϕ
UA=ϕ
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